stick with technology. get the new flexcare platinum from philips sonicare and save now. philips sonicare. where their electricity comes from. they flip the switch-- and the light comes on. it's our job to make sure that it does. using natural gas this power plant can produce enough energy for about 600,000 homes. generating electricity that's cleaner and reliable, with fewer emissions-- it matters. ♪ [ female announcer ] can you bridge a divide with a fresh baked brownie? ♪ yes! yes you can. bake the world a better place with nestle toll house. >>> we're watching for this. u.s. secretary of state john kerry's arrival on capitol hill. he's actually scheduled to testify about 1:00 or so to defend the recent iran nuke deal before the house foreign affairs committee. >> now, that deal, of course, calls for more inspections, some limits also on iran's uranium enrichment program in exchange for the easing of some sanctions on iran. but a bipartisan group of senators is close to a deal on an agreement, if you like, on tougher sanctions. >> and so let's bring in jim sciutto